A method for allocating resources for a scheduling request indicator (SRI) is disclosed. An SRI cycle period for use by user equipment (UE) within a cell is transmitted from a NodeB in a cell to UE within the cell. The NodeB transmits a specific SRI subframe offset and an index value to the particular UE within the cell. The specific SRI subframe offset and the index value enable the UE to determine a unique combination of cyclic shift, RS orthogonal cover, data orthogonal cover, and resource block number for the UE to use as a unique physical resource for an SRI in the physical uplink control channel (PUCCH).
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2. The method of claim 1 wherein the SRI cycle period extends the unique physical resource to a persistent periodic physical resource.
A NodeB transmits an SRI cycle period, a specific SRI subframe offset, and an index value to a User Equipment (UE) within a cell. These values enable the UE to determine a unique combination of cyclic shift, RS orthogonal cover, data orthogonal cover, and resource block number, which acts as a unique physical resource for transmitting a Scheduling Request Indicator (SRI) on the Physical Uplink Control Channel (PUCCH). The SRI cycle period specifically ensures that this unique physical resource is allocated as a persistent and repeating resource, allowing the UE to use it periodically for SRIs.
3. The method of claim 1 wherein the SRI cycle period, the specific SRI subframe offset and the index value are transmitted in UE-specific level three (L3) signaling in a media access control (MAC) protocol data unit (PDU) on a physical downlink shared channel (PDSCH).
A NodeB transmits an SRI cycle period, a specific SRI subframe offset, and an index value to a User Equipment (UE) within a cell. These values enable the UE to determine a unique combination of cyclic shift, RS orthogonal cover, data orthogonal cover, and resource block number, which acts as a unique physical resource for transmitting a Scheduling Request Indicator (SRI) on the Physical Uplink Control Channel (PUCCH). Specifically, the NodeB sends the SRI cycle period, the specific SRI subframe offset, and the index value using UE-specific level three (L3) signaling, encapsulated within a Media Access Control (MAC) Protocol Data Unit (PDU), and transmitted over the Physical Downlink Shared Channel (PDSCH).
4. The method of claim 1, further comprising receiving an SRI from the first UE on the unique physical resource in accordance with the specific SRI subframe offset and the index value.
A NodeB transmits an SRI cycle period, a specific SRI subframe offset, and an index value to a User Equipment (UE) within a cell. These values enable the UE to determine a unique combination of cyclic shift, RS orthogonal cover, data orthogonal cover, and resource block number, which acts as a unique physical resource for transmitting a Scheduling Request Indicator (SRI) on the Physical Uplink Control Channel (PUCCH). Following this configuration, the NodeB actively receives an SRI from that UE, utilizing this unique physical resource at the timing specified by the specific SRI subframe offset and the particular resource identified by the index value.
6. The method of claim 5 wherein the SRI cycle period extends the unique physical resource to a persistent periodic physical resource.
A User Equipment (UE) receives an SRI cycle period, a specific SRI subframe offset, and an index value from a NodeB. Based on these received values, the UE determines a unique combination of cyclic shift, RS orthogonal cover, data orthogonal cover, and resource block number. This combination serves as a unique physical resource for transmitting a Scheduling Request Indicator (SRI) on the Physical Uplink Control Channel (PUCCH). The SRI cycle period, specifically, configures this unique physical resource to be a persistent and repeating resource that the UE can use periodically for sending SRIs.
7. The method of claim 5 wherein the SRI cycle period, the specific SRI subframe offset and the index value are received in level three (L3) signaling in a media access control (MAC) protocol data unit (PDU) on a physical downlink shared channel (PDSCH).
A User Equipment (UE) receives an SRI cycle period, a specific SRI subframe offset, and an index value from a NodeB. Based on these received values, the UE determines a unique combination of cyclic shift, RS orthogonal cover, data orthogonal cover, and resource block number. This combination serves as a unique physical resource for transmitting a Scheduling Request Indicator (SRI) on the Physical Uplink Control Channel (PUCCH). The UE receives the SRI cycle period, the specific SRI subframe offset, and the index value through level three (L3) signaling. This signaling is carried within a Media Access Control (MAC) Protocol Data Unit (PDU) that is transmitted over the Physical Downlink Shared Channel (PDSCH).
8. The method of claim 5, further comprising transmitting an SRI from the first UE on the unique physical resource in accordance with the specific SRI subframe offset and the index value.
This invention relates to wireless communication systems, specifically to methods for transmitting sounding reference signals (SRI) in a user equipment (UE) device. The problem addressed is the efficient allocation and transmission of SRIs in a shared communication environment, ensuring proper resource utilization and minimizing interference. The method involves a first UE device receiving a configuration message from a base station, which includes a specific subframe offset and an index value for SRI transmission. The configuration message also specifies a unique physical resource for the SRI transmission. The first UE then transmits the SRI on this unique physical resource, adhering to the specified subframe offset and index value. This ensures that the SRI is transmitted at the correct time and on the correct resource, avoiding conflicts with other transmissions. The method may also involve the first UE receiving a grant message from the base station, which includes a resource allocation for uplink data transmission. The first UE then transmits uplink data on the allocated resource, using the same physical resource as the SRI transmission. This ensures that the uplink data transmission is synchronized with the SRI, improving communication efficiency. The method further includes the first UE receiving a second configuration message from the base station, which includes a second subframe offset and a second index value for a second SRI transmission. The first UE then transmits the second SRI on a second unique physical resource, adhering to the second subframe offset and the second index value. This allows for multiple SRI transmissions, further improving communication reliability and efficiency.
10. The apparatus of claim 9, wherein the processor is further operable to determine data is ready for transmission on a physical uplink shared channel (PUSCH), and to instruct the transmitter to transmit an SRI on the unique physical resource on the PUCCH.
An apparatus, such as a User Equipment (UE), includes a processor configured to receive an SRI cycle period, a specific SRI subframe offset, and an index value from a NodeB. The processor uses these values to determine a unique combination of cyclic shift, RS orthogonal cover, data orthogonal cover, and resource block number, which acts as a unique physical resource for a Scheduling Request Indicator (SRI) on the Physical Uplink Control Channel (PUCCH). Furthermore, this processor is capable of detecting when data is ready to be transmitted on the Physical Uplink Shared Channel (PUSCH). Upon detecting this data, the processor instructs the apparatus's transmitter to send an SRI using the determined unique physical resource on the PUCCH to request uplink transmission resources.
11. The apparatus of claim 9 wherein the SRI cycle period extends the unique physical resource to a persistent periodic physical resource.
An apparatus, such as a User Equipment (UE), includes a processor configured to receive an SRI cycle period, a specific SRI subframe offset, and an index value from a NodeB. The processor uses these values to determine a unique combination of cyclic shift, RS orthogonal cover, data orthogonal cover, and resource block number, which acts as a unique physical resource for a Scheduling Request Indicator (SRI) on the Physical Uplink Control Channel (PUCCH). With the SRI cycle period, this apparatus is configured such that the unique physical resource becomes a persistent and repeating resource, enabling the UE to periodically transmit SRIs without needing continuous re-allocation.
12. The apparatus of claim 9 wherein the SRI cycle period, the specific SRI subframe offset and the index value are received in level three (L3) signaling in a media access control (MAC) protocol data unit (PDU) on a physical downlink shared channel (PDSCH).
An apparatus, such as a User Equipment (UE), includes a processor configured to receive an SRI cycle period, a specific SRI subframe offset, and an index value from a NodeB. The processor uses these values to determine a unique combination of cyclic shift, RS orthogonal cover, data orthogonal cover, and resource block number, which acts as a unique physical resource for a Scheduling Request Indicator (SRI) on the Physical Uplink Control Channel (PUCCH). The apparatus receives the SRI cycle period, the specific SRI subframe offset, and the index value through level three (L3) signaling. This signaling is delivered in a Media Access Control (MAC) Protocol Data Unit (PDU) transmitted over the Physical Downlink Shared Channel (PDSCH).
13. The apparatus of claim 9 being a cellular telephone.
An apparatus comprises a processor configured to receive an SRI cycle period, a specific SRI subframe offset, and an index value from a NodeB. The processor uses these values to determine a unique combination of cyclic shift, RS orthogonal cover, data orthogonal cover, and resource block number, which acts as a unique physical resource for a Scheduling Request Indicator (SRI) on the Physical Uplink Control Channel (PUCCH). This apparatus is specifically embodied as a cellular telephone, capable of performing these functions within a wireless network.
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February 15, 2021
March 19, 2024
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